Numeric Value: 840

The folowing table expresses '840' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.

BaseDR10DR9DR8DR7DR6DR5DR4DR3DR2DR1
21101001000      100 1
3   1011010    112
4     31020  123
5     11330  134
6      3520 145
7      2310  6
8      1510  7
9      1133  8
10       840123
11       6A419A
12       5A0134
13       4C81BC
14       440 8
15       3B0 E
16       348 F

Math World

Factors: 23 * 3 * 5 * 7

840 is in the Pythagorean Triples: (41, 840, 841), (840, 1081, 1369), (559, 840, 1009).